The given chart shows the number of students in Class 4, Class 5, Class 6 and Class 7 who got first class, second class andfailed in the final examinations.
What is the pass percentage of Class 4?
From the chart,
Pass percentage of Class 4 $$=\frac{\text{number of students passed}}{\text{Total number of students}}=\frac{45+12}{45+12+3}\times100=\frac{57}{60}\times100=95\%$$
Hence, the correct answer is Option D
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